Hotel is very pleasant, several different furo´s, you get most out of it is you want japanese experience, tatami room, furo several times a day, dinners spectacular but runnning bit out of ideas on 3rd dinner as we had no meat wish. all seafood superb.
Natural park starts on island Sensui-jima just in front of village, excellent for swimming, hiking. and you find good places to lunch there.
Tomonouro is very pleasant fisherman village, walking distance all over, couple of small museums, several temples